OFFSET
1,1
COMMENTS
Subsequence of A075430.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..10000
PROG
(PARI) isok(p)={isprime(p) && (moebius(p+1) == -1 || moebius(p-1) == 1)} \\ Andrew Howroyd, Apr 20 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Sep 15 2002
EXTENSIONS
Terms a(41) and beyond from Andrew Howroyd, Apr 20 2021
STATUS
approved